KR20240036824A - Cementitious composition - Google Patents
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- KR20240036824A KR20240036824A KR1020220115326A KR20220115326A KR20240036824A KR 20240036824 A KR20240036824 A KR 20240036824A KR 1020220115326 A KR1020220115326 A KR 1020220115326A KR 20220115326 A KR20220115326 A KR 20220115326A KR 20240036824 A KR20240036824 A KR 20240036824A
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- 239000000203 mixture Substances 0.000 title claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 19
- 239000003513 alkali Substances 0.000 claims abstract description 11
- 230000001737 promoting effect Effects 0.000 claims abstract description 11
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000002436 steel type Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 11
- 238000006703 hydration reaction Methods 0.000 abstract description 4
- 206010067484 Adverse reaction Diseases 0.000 abstract description 3
- 230000006838 adverse reaction Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 239000002085 irritant Substances 0.000 description 2
- 231100000021 irritant Toxicity 0.000 description 2
- 239000002075 main ingredient Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011044 quartzite Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000021 stimulant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/06—Oxides, Hydroxides
- C04B22/062—Oxides, Hydroxides of the alkali or alkaline-earth metals
- C04B22/064—Oxides, Hydroxides of the alkali or alkaline-earth metals of the alkaline-earth metals
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/085—Acids or salts thereof containing nitrogen in the anion, e.g. nitrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0006—Alkali metal or inorganic ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/001—Alkaline earth metal or Mg-compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0088—Compounds chosen for their latent hydraulic characteristics, e.g. pozzuolanes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1037—Cement free compositions, e.g. hydraulically hardening mixtures based on waste materials, not containing cement as such
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
본 발명은 저온 환경에서 내한 촉진이 가능한 조강형 무시멘트 조성물에 관한 것으로서, 상세하게는 저온환경에서도 급결, 반응지연 등의 이상반응이 발생하지 않으면서 정상적인 수화반응을 거쳐 안정적 품질을 유지할 수 있는 내한 촉진 알칼리자극 고로슬래그 무시멘트 결합재를 제공하고자 한다.The present invention relates to a pre-strengthened cementless composition capable of promoting cold resistance in a low-temperature environment, and specifically, promoting cold resistance that can maintain stable quality through a normal hydration reaction without causing adverse reactions such as rapid setting or reaction delay even in a low-temperature environment. The aim is to provide an alkali-stimulated blast furnace slag cementless binder.
Description
본 발명은 저온 환경에서 내한 촉진이 가능한 조강형 무시멘트 조성물에 관한 것으로서, 상세하게는 저온환경에서도 급결, 반응지연 등의 이상반응이 발생하지 않으면서 정상적인 수화반응을 거쳐 안정적 품질을 유지할 수 있는 내한 촉진 알칼리자극 고로슬래그 무시멘트 결합재를 제공하고자 한다.The present invention relates to a pre-strengthened cementless composition capable of promoting cold resistance in a low-temperature environment, and specifically, promoting cold resistance that can maintain stable quality through a normal hydration reaction without causing adverse reactions such as rapid setting or reaction delay even in a low-temperature environment. The aim is to provide an alkali-stimulated blast furnace slag cementless binder.
일반적으로 포틀랜드 시멘트는 산화칼슘(CaO), 이산화규소(SiO2), 산화알루미늄(A12O3), 산화철(Fe2O3)이 함유된 원료 물질을 소정의 배합비로 혼합하여 분쇄한 후 소성로에 투입하여 클링커를 만들고, 이것을 다시 석고와 함께 혼합, 미분쇄하는 공정을 거쳐 제조된다.In general, Portland cement is made by mixing raw materials containing calcium oxide (CaO), silicon dioxide (SiO2), aluminum oxide (A12O3), and iron oxide (Fe2O3) in a predetermined mixing ratio, grinding them, and then putting them into a kiln to make clinker. It is manufactured through a process of mixing it with gypsum and pulverizing it again.
상기한 바와 같이 시멘트는 산화칼슘, 이산화규소, 산화알루미늄, 산화철의 4가지를 주성분으로 하기 때문에 시멘트 원료로서의 조건은 그 4가지 주요성분을 함유하면서 분쇄성 및 소성성이 용이하고 성분의 변동이 작으면서 값싸게 구입할 수 있어야 한다. As mentioned above, cement is made up of four main ingredients: calcium oxide, silicon dioxide, aluminum oxide, and iron oxide. Therefore, the conditions for use as a cement raw material are that it contains the four main ingredients, is easy to grind and sinter, and has little variation in composition. It should be able to be purchased cheaply.
이러한 조건에 따라 성분별로 사용할 수 있는 원료 물질로는 석회질, 점토질, 규산질 및 산화철 원료 등이 있다. 이중에서 시멘트 원료 중 약 90%를 차지하는 석회석의 보편적인 품위는 탄산칼슘(CaC03)을 85%정도 함유하고 있는 것을 기준으로 한다. Raw materials that can be used according to these conditions include limestone, clay, siliceous, and iron oxide raw materials. Among these, the universal grade of limestone, which accounts for about 90% of cement raw materials, is based on containing about 85% of calcium carbonate (CaC03).
석회질 원료에서 공급된 산화칼슘 이외의 산성 산화물인 이산화규소와 산화알루미늄을 공급하는 원료로서 점토(Clay)와 셰일(Shale) 등이 이용되고 있으며,In addition to calcium oxide supplied from calcareous raw materials, clay and shale are used as raw materials for supplying silicon dioxide and aluminum oxide, which are acidic oxides.
석회석 및 점토질 원료에서 충족되지 못한 이산화규소와 산화철을 공급하기 위해서 규석 및 규사, 철광석 또는 제강 슬래그 등이 이용되고 있다.Quartzite, silica sand, iron ore, or steelmaking slag are used to supply silicon dioxide and iron oxide that are not supplied from limestone and clay raw materials.
그러나 기존의 고로슬래그 기반의 무시멘트 결합재는 저온환경에서 반응성이 현저히 떨어져 겨울철 공사에 상당한 품질저하가 발생한다. 특히, 무시멘트 결합재는 포틀랜드 시멘트가 저온환경에서 받는 영향보다 더욱 크게 받아 품질 저하의 정도가 심하게 발생한다. However, existing blast furnace slag-based cementless binders have significantly lower reactivity in low-temperature environments, resulting in significant quality degradation during winter construction. In particular, cementless binders are more severely affected than Portland cement in low-temperature environments, resulting in severe quality deterioration.
이를 개선하기 위해 무시멘트 결합재의 알칼리자극제의 농도를 높이거나 자극의 수준을 높이기 위해 자극제 종류를 변경하고 있지만, 급속한 경화로 시공성이 현저히 떨어지거나 급결로 인한 내구성에도 문제점이 발생하고 있다. To improve this, the concentration of the alkaline irritant in the cement-free binder is increased or the type of irritant is changed to increase the level of irritation. However, workability is significantly reduced due to rapid hardening, and problems with durability due to rapid hardening are occurring.
상기 종래의 문제점을 해결하기 위해 본 발명은 저온환경에서도 급결, 반응지연 등의 이상반응이 발생하지 않으면서 정상적인 수화반응을 거쳐 안정적 품질을 유지 할 수 있는 내한 촉진 알칼리자극 고로슬래그 무시멘트 결합재를 제공하고자 한다.In order to solve the above conventional problems, the present invention provides a cold-resistant, alkali-stimulated blast furnace slag cementless binder that can maintain stable quality through a normal hydration reaction without causing adverse reactions such as rapid setting or reaction delay even in a low temperature environment. I want to do it.
구성을 살펴보면, 본 발명에서 무시멘트는 고로슬래그 60~92%, 알루미나계 촉진제 2~30%, CaO 2~20%, 질산칼슘,아질산칼슘 단일 혹은 혼용으로 2~20%, 탄산나트륨, 규산나트륨, 수산화나트륨을 단일 또는 혼용하여 0.5~10%로 혼합하여 제조할 수 있다. Looking at the composition, in the present invention, cementless is 60-92% blast furnace slag, 2-30% alumina-based accelerator, 2-20% CaO, 2-20% calcium nitrate, calcium nitrite alone or in combination, sodium carbonate, sodium silicate, It can be manufactured by mixing sodium hydroxide singly or in combination at 0.5 to 10%.
본 발명은 다음과 같은 효과를 기대할 수 있다.The present invention can be expected to have the following effects.
-첫째, 본 발명의 내한 촉진형 무시멘트 결합재는 완벽히 모든 재료가 혼합된 분말형태로 별도의 내한촉진제 첨가 과정이 없기 때문에 사용이 용이하다.-First, the cold-resistant accelerator-type cementless binder of the present invention is easy to use because it is in the form of a powder in which all materials are perfectly mixed and there is no separate process of adding a cold-resistant accelerator.
상기 내한촉진제 : 겨울철 콘크리트 타설시 온도가 떨어지면 동결로 인해 품질이 현저히 떨어지는데 이를 방지해 주는 혼합제이다. The above cold resistance accelerator: This is a mixing agent that prevents the quality from significantly deteriorating due to freezing when the temperature drops when pouring concrete in winter.
-내한촉진제는 대부분 겨울철 공사에 콘크리트에 별도 공정을 준비해 첨가해 사용하고 있어 사용이 불편하고 비용이 상승하게 된다.-Most cold-resistant accelerators are used by adding them to concrete in a separate process during winter construction, making them inconvenient to use and increasing costs.
그러나 본 발명의 슬래그 기반의 무시멘트 재료는 겨울철 온도 영향을 보통포틀랜드 시멘트에 비해 훨씬 많이 받는다. 또한, 무시멘트 배합은 보통의 온도에서도 내한촉진제를 활용해 재료 반응의 활성도를 높이면 초기 강도를 높이고 품질을 향상시킬 수 있다.However, the slag-based cementless material of the present invention is much more affected by winter temperature than ordinary Portland cement. In addition, cement-free mixing can increase initial strength and improve quality by using a cold resistance accelerator to increase the activity of the material reaction even at normal temperatures.
-둘째, 본 발명의 내한 촉진형 무시멘트 결합재는 4℃ 내외의 저온환경에서 우수한 성능을 발휘할 뿐만 아니라 실온(21~23℃)에서는 반응 속도를 높여 24시간 이내에 10Mpa 이상의 압축강도를 발현할 수 있어 작업 속도를 빠르게 할 수 있다.-Second, the cold-resistant accelerated cementless binder of the present invention not only exhibits excellent performance in a low temperature environment of around 4℃, but also increases the reaction rate at room temperature (21~23℃) and can develop a compressive strength of more than 10Mpa within 24 hours. It can speed up work.
본 발명의 무시멘트 결합재는 슬래그를 알칼리 자극제로 활성화시켜 강도를 발현시킨다. 겨울철 온도 저하시 내한촉진 성분의 발열성능을 통해 반응성을 높이고 정상적인 강도를 발현시킬 수 있다. 이와 동시에 발열성능 뿐만 아니라 알칼리성을 띄고 있는 내한촉진제는 슬래그의 반응 활성도를 높여 강도 향상에 일조 할 수 있다.The cementless binder of the present invention develops strength by activating slag with an alkaline stimulant. When temperatures drop in winter, reactivity can be increased and normal strength can be achieved through the heating performance of cold resistance promoting ingredients. At the same time, the cold-resistant accelerator, which not only has heating performance but also has alkaline properties, can contribute to improving strength by increasing the reaction activity of slag.
2. 실온(21~23℃)에서는 반응 속도를 높여 24시간 이내에 10Mpa 이상의 압축강도를 발현할 수 있다.2. At room temperature (21-23℃), the reaction rate can be increased to develop a compressive strength of more than 10Mpa within 24 hours.
이처럼 내한촉진제를 사용하여 10Mpa 이상으로 초기 강도를 충분히 높일 수 있다. In this way, the initial strength can be sufficiently increased to 10Mpa or more by using a cold resistance accelerator.
셋째, 본 발명은 무시멘트 결합재 조성물의 구성비를 변화시켜 자유롭게 경화속도를 조절할 수 있고 사용 환경에 따라 무시멘트 결합재 상태를 최적화 할 수 있다. Third, the present invention can freely control the curing speed by changing the composition ratio of the cementless binder composition and optimize the state of the cementless binder depending on the usage environment.
구성을 살펴보고 그에 따른 실시예를 설명한다.The configuration will be examined and the corresponding embodiments will be described.
시멘트가 포함되지 않으면서 저온 환경에서 정상적인 경화가 가능한 무시멘트 조성물을 제조하기 위한 것으로,It is intended to manufacture a cement-free composition that does not contain cement and is capable of normal hardening in a low-temperature environment.
무시멘트는 제철소 산업부산물인 고로슬래그와 저온 환경에서 발생하는 강도 저하를 극복할 수 있는 내한 촉진 알칼리 자극제로 구성된다.Cementless cement is composed of blast furnace slag, an industrial by-product of steel mills, and an alkali stimulant that promotes cold resistance and can overcome the decrease in strength that occurs in low-temperature environments.
상기 내한 촉진 알칼리자극제는 알루미나계 촉진제, CaO 및 질산칼슘, 아질산칼슘을 포함하여 발열과 촉진 성능을 동시에 가지는 것을 특징으로 하며 CaSO4를 통한 초기 반응 활성화에 도움을 줄 수 있다.The cold-resistant alkali stimulant contains an alumina-based accelerator, CaO, calcium nitrate, and calcium nitrite, and is characterized by having both heat generation and accelerating properties and can help activate the initial reaction through CaSO 4 .
상기 고로슬래그는 미분말 형태로 분말도 2000~9000㎠/g 이며, 60 중량부 이상 92 중량부 이하로 구성된다.The blast furnace slag is in the form of fine powder, has a powder degree of 2000 to 9000 cm2/g, and consists of 60 parts by weight or more and 92 parts by weight or less.
상기 내한 촉진 알칼리 자극제로는 알루미나계 촉진제, CaO 및 질산칼슘, 아질산칼슘을 포함하여 발열과 촉진 성능을 동시에 가지는 것을 특징으로 하는 동절기 조강형 무시멘트용 내한성 알칼리 자극제로 8 중량부 이상 40 중량부 이하로 구성한다.The cold-resistant alkali stimulant includes an alumina-based accelerator, CaO, calcium nitrate, and calcium nitrite, and is a cold-resistant alkali stimulant for winter early-strengthening type cement that has both heating and accelerating properties and is used in an amount of not less than 8 parts by weight but not more than 40 parts by weight. Compose.
표 1의 내용을 통해 콘크리트 내한촉진제를 참고하면,Referring to the concrete cold resistance accelerator through the contents of Table 1,
표 1처럼 수용성 무기염은 무시멘트 광물 중 C3S의 수화를 촉진시키는 것이며, 유사한 물농도 조건에서는 위와 같은 순서로 음이온 및 양이온의 효과가 높은 것으로 알려져 있다.As shown in Table 1, water-soluble inorganic salts promote the hydration of C 3 S in cementless minerals, and under similar water concentration conditions, the effects of anions and cations in the above order are known to be high.
상기 알칼리 자극제는 알루미나계 촉진계 2~30 중량부, CaO 2~20 중량부, 질산칼슘,아질산칼슘 단일 혹은 혼용으로 2~20 중량부로 구성된다The alkaline stimulant consists of 2 to 30 parts by weight of an alumina-based accelerator, 2 to 20 parts by weight of CaO, and 2 to 20 parts by weight of calcium nitrate and calcium nitrite, either alone or in combination.
상기 내한 촉진 알칼리 자극제의 초기 경화를 촉진하기 위해 외부 온도의 변화에 따라 탄산나트륨, 규산나트륨, 수산화나트륨을 단일 또는 혼용하여 0.5~10 중량부로 첨가한다.In order to promote the initial hardening of the cold resistance promoting alkaline stimulant, 0.5 to 10 parts by weight of sodium carbonate, sodium silicate, and sodium hydroxide are added singly or in combination depending on the change in external temperature.
실시예, 외부 온도가 높으면 사용량을 줄여 반응성을 감소시키고, 외부 온도가 낮으면 사용량을 늘려 반응성을 활성화 시킨다. In an example, when the external temperature is high, the amount used is reduced to reduce reactivity, and when the external temperature is low, the amount used is increased to activate reactivity.
너무 많이 사용하면 발열반응에 의해 급결하여 시공성이 저하된다. If too much is used, it hardens rapidly due to an exothermic reaction, deteriorating constructability.
온도에 따라 사용량을 조정해서 사용해야 한다. The amount used must be adjusted depending on the temperature.
위의 재료들 역시 발열 반응 뿐만 아니라 슬래그에 알칼리 자극제로 사용하여 슬래그 입자의 반응을 활성화 시킬 수 있다. The above materials can also activate the reaction of slag particles by using them as alkaline stimulants in slag as well as exothermic reaction.
참고로, 슬래그는 자연상태에서 시멘트처럼 물과 반응하여 경화하지 않는다. For reference, slag does not harden by reacting with water like cement in its natural state.
상기 슬래그를 시멘트처럼 경화시키기 위해서는 특별한 상태를 만들어 줘야 한다. 알칼리도를 높여 슬래그 입자의 피막이 파괴될 수 있는 조건을 만들어 주면 시멘트처럼 물과 반응하여 경화하게 된다.In order to harden the slag like cement, special conditions must be created. If you increase the alkalinity and create conditions in which the film of slag particles can be destroyed, it hardens by reacting with water like cement.
그래서 슬래그를 잠재수경성 재료라 한다. Therefore, slag is called a potential hydraulic material.
본 발명의 내한 촉진이 가능한 조강형 무시멘트 결합재의 모든 구성재료는 분말 형태로 구성되며, 혼합하여 사용이 용이한 단일 분말 상태로 제조되는 것을 특징이다.All constituent materials of the steel-type cementless binder capable of promoting cold resistance of the present invention are in powder form, and are characterized by being manufactured into a single powder that is easy to mix and use.
Claims (3)
고로슬래그와 저온 환경에서 발생하는 강도 저하를 극복할 수 있는 내한 촉진 알칼리자극제로 구성하되,
상기 고로슬래그는 미분말 형태로 분말도가 2000~9000㎠/g 이며, 60 중량부 이상 92 중량부 이하로 포함하고,
상기 내한 촉진 알칼리 자극제로는 알루미나계 촉진제, CaO 및 질산칼슘, 아질산칼슘을 포함하여 발열과 촉진 성능을 동시에 가지는 것과, 동절기 조강형 무시멘트용 내한성 알칼리 자극제로 8 중량부 이상 40 중량부 이하로 포함하는 것을 특징으로 하는 저온 환경에서 내한 촉진이 가능한 조강형 무시멘트 조성물.
In order to manufacture a cement-free composition that does not contain cement and is capable of normal curing in a low temperature environment,
It is composed of blast furnace slag and an alkali stimulant that promotes cold resistance to overcome the decrease in strength that occurs in a low-temperature environment.
The blast furnace slag is in the form of fine powder, has a fineness of 2000 to 9000 cm2/g, and contains not less than 60 parts by weight and not more than 92 parts by weight,
The cold-resistant alkali stimulant includes an alumina-based accelerator, CaO, calcium nitrate, and calcium nitrite, which have both heating and accelerating properties, and a cold-resistant alkali stimulant for early strengthening type cement in winter, which contains not less than 8 parts by weight but not more than 40 parts by weight. A steel-type cementless composition capable of promoting cold resistance in a low-temperature environment.
알칼리 자극제는 알루미나계 촉진계 2~30 중량부, CaO 2~20 중량부, 질산칼슘,아질산칼슘 단일 혹은 혼용으로 2~20 중량부로 구성하는 저온 환경에서 내한 촉진이 가능한 조강형 무시멘트 조성물.
According to clause 1,
The alkaline stimulant is an alumina-based accelerator, 2 to 30 parts by weight, CaO 2 to 20 parts by weight, and calcium nitrate and calcium nitrite alone or in combination, 2 to 20 parts by weight. An early-strength type cement-free composition capable of promoting cold resistance in a low-temperature environment.
내한 촉진 알칼리 자극제의 초기 경화를 촉진하기 위해 외부 온도 변화에 따라 탄산나트륨, 규산나트륨, 수산화나트륨을 단일 또는 혼용하여 0.5~10 중량부로 첨가하는 것을 특징으로 하는 저온 환경에서 내한 촉진이 가능한 조강형 무시멘트 조성물.According to clause 1,
A steel-type cementless composition capable of promoting cold resistance in a low-temperature environment, characterized by adding 0.5 to 10 parts by weight of sodium carbonate, sodium silicate, and sodium hydroxide singly or in combination depending on external temperature changes to promote the initial hardening of the cold resistance promoting alkali stimulant. .
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